Cell Resp.

Question 1

What is the primary purpose of cellular respiration?

Answer 1

To convert biochemical energy from nutrients into adenosine triphosphate (ATP).

Question 2

Which organelle is known as the powerhouse of the cell?

Answer 2

Mitochondria.

Question 3

True or False: Glycolysis occurs in the mitochondria.

Answer 3

False.

Question 4

Fill in the blank: The three main stages of cellular respiration are glycolysis, the citric acid cycle, and __________.

Answer 4

oxidative phosphorylation.

Question 5

What is the end product of glycolysis?

Answer 5

Pyruvate.

Question 6

Which molecule acts as the final electron acceptor in the electron transport chain?

Answer 6

Oxygen.

Question 7

What is the net gain of ATP molecules from one molecule of glucose during glycolysis?

Answer 7

2 ATP.

Question 8

Which process occurs in the absence of oxygen and results in the production of lactic acid or ethanol?

Answer 8

Fermentation.

Question 9

True or False: The citric acid cycle occurs in the cytoplasm.

Answer 9

False.

Question 10

What is produced during the citric acid cycle in addition to ATP?

Answer 10

NADH and FADH2.

Question 11

Multiple Choice: Which of the following is NOT a product of the citric acid cycle? A) CO2 B) ATP C) O2 D) NADH

Answer 11

C) O2.

Question 12

What is the role of NAD+ in cellular respiration?

Answer 12

It acts as an electron carrier.

Question 13

Fill in the blank: During oxidative phosphorylation, ATP is produced through a process called __________.

Answer 13

chemiosmosis.

Question 14

How many ATP molecules can be produced from one molecule of glucose during aerobic respiration?

Answer 14

Up to 38 ATP.

Question 15

True or False: The electron transport chain is located in the inner mitochondrial membrane.

Answer 15

True.

Question 16

What is the main purpose of the citric acid cycle?

Answer 16

To generate electron carriers for the electron transport chain.

Question 17

Multiple Choice: Which of the following processes occurs in the mitochondria? A) Glycolysis B) Fermentation C) Citric acid cycle D) None of the above

Answer 17

C) Citric acid cycle.

Question 18

What happens to pyruvate before entering the citric acid cycle?

Answer 18

It is converted into acetyl-CoA.

Question 19

Fill in the blank: The process of converting ADP to ATP is called __________.

Answer 19

phosphorylation.

Question 20

True or False: ATP is a stable molecule that can be stored for long periods in the cell.

Answer 20

False.

Question 21

What is the role of FADH2 in cellular respiration?

Answer 21

It donates electrons to the electron transport chain.

Question 22

Multiple Choice: Which of the following is a byproduct of cellular respiration? A) Glucose B) Oxygen C) Carbon dioxide D) Lactic acid

Answer 22

C) Carbon dioxide.

Question 23

What is the difference between aerobic and anaerobic respiration?

Answer 23

Aerobic respiration requires oxygen, while anaerobic respiration does not.

Question 24

Fill in the blank: The enzyme ATP synthase is responsible for synthesizing ATP during __________.

Answer 24

oxidative phosphorylation.

Question 25

True or False: The energy yield of anaerobic respiration is greater than that of aerobic respiration.

Answer 25

False.

Question 26

What is the main function of the electron transport chain?

Answer 26

To create a proton gradient for ATP production.